OK guys, imagine this:
link your Amazon account with your eShop, so you can buy in amazon.
positive points:
Some other platforms players (xbox, ps, etc.) will see games from the eShop in the recommendation panel.
Remember that some of these games are only in the eShop (as far as i know).
Some people in countries like LA (like me in Dominican Republic) can buy with the credit card outside of the countries allowed in the eShop.